Dictionary.com
Thesaurus.com
Synonyms

water dog

American  

noun

  1. a dog that swims well or is trained to retrieve waterfowl in hunting.

  2. Informal. a person who feels at home in or on the water.

  3. waterdog.


water dog British  

noun

  1. a dog trained to hunt in water

  2. informal a dog or person who enjoys going in or on the water

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of water dog

Middle English word dating back to 1300–50

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sonny, the star Portuguese water dog, went nosing around for a girlfriend when he was supposed to be attending to press obligations in the Long Island living room of his professional dog-show handler, Kimberly Calvacca.

From The Wall Street Journal • Jan. 31, 2026

Books have also been written about President Barack Obama’s white-chested Portuguese water dog, Bo.

From Seattle Times • Mar. 27, 2024

Barack Obama had Bo, the Portuguese water dog who made good on the promise Obama made to his daughters after the 2008 election and was emblematic of a young family’s arrival in the White House.

From Washington Post • Mar. 9, 2021

Sisters, friends and pastors drop by regularly with food, water, dog food, eyeglasses and McDonald’s gift cards.

From Los Angeles Times • Sep. 9, 2019

And Cha-Cha, the water dog, bustled over carrying a sloshing bucket in her mouth.

From "Dog Squad" by Chris Grabenstein